Generate multiple hashes for a file and print them as a markdown table

hash-multi-n-print-markdown-table.sh

#!/bin/sh
# requires `pee` command from `moreutils` suite
SUMS=(
    md5sum
    sha1sum
    sha256sum
)
FILE="${1}"

printf '<details>\n'
printf '<summary>Checksums for <code>%s</code>:</summary>\n\n' "${FILE}"
pee "${SUMS[@]}" < "${FILE}" | \
    awk '
        BEGIN {
            '"$(
                for i in $(seq 1 ${#SUMS[@]})
                do
                    printf 'a[%d]=\"%s\"\n' $i "${SUMS[$((i - 1))]}"
                done
            )"'
            print "Name           | Value"
            print "-------------- | -----------------------"
        }
        a[NR] {
            printf "%-14s | %s\n", "**"a[NR]"**", $1
        }
    '
printf '\n</details>\n'